Drilling tool



FIG. 1 is a front view of a drilling tool,

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a perspective view thereof;

FIG. 8 is an enlarged front view of XX-XX portion of FIG. 1,

FIG. 9 is an enlarged top view of XX-XX portion of FIG. 1,

FIG. 10 is an enlarged right side view of XX-XX portion of FIG. 1,

FIG. 11 is an enlarged first perspective view of XX-XX portion of FIG. 1; and,

FIG. 12 is an enlarged second perspective view of XX-XX portion of FIG. 1.

The broken lines shown in the drawings represent portions of the drilling tool that form no part of the claimed design. 

CLAIM The ornamental design for a drilling tool, as shown and described. 